December weather forecastMoriyacho, Japan

December

Weather in December

The first month of the winter, December, is still a cool month in Moriyacho, Japan, with an average temperature ranging between min 6.9°C (44.4°F) and max 11.7°C (53.1°F).

Temperature

The transition into December is accompanied by a temperature decrease, with the average high-temperature shifting from a comfortable 16.7°C (62.1°F) in November to a fresh 11.7°C (53.1°F). In Moriyacho, December's low temperatures hover around a frosty 6.9°C (44.4°F), reflecting a minor decrease from the daytime highs.

Humidity

The average relative humidity in December is 63%.

Rainfall

The month with the least rainfall in Moriyacho is December, when the rain falls for 9 days and typically collects 40mm (1.57") of precipitation.

Snowfall

In Moriyacho, snow does not fall in April through December.

Daylight

The month with the shortest days is December, with an average of 9h and 48min of daylight.
On the first day of December in Moriyacho, sunrise is at 06:32 and sunset at 16:28. On the last day of the month, sunrise is at 06:50 and sunset at 16:38 JST.

Sunshine

In December, the average sunshine in Moriyacho, Japan, is 6.2h.

UV index

January through March and December, with an average maximum UV index of 3, are months with the lowest UV index in Moriyacho, Japan. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.
Note: A typical high UV index of 3 in December suggests the following recommendations:
Guard yourself - An obligation to protect skin and eyes from harm exists. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Stay sun-safe with clothing that is both closely woven and worn loosely. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.

Updated: Jan 31, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature during December is 11.7°C (53.1°F) and the low-temperature is 6.9°C (44.4°F). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in August is calculated to be 36°C (96.8°F).

In December, the average relative humidity in Moriyacho is 63%.

The month with the least rainfall in Moriyacho, Japan, is December, when the rain falls for 9 days and typically collects 40mm (1.57") of precipitation.

In Moriyacho, in December, it is raining for 9 days, with typically 40mm (1.57") of accumulated precipitation.

April through December are months without snowfall in Moriyacho.

In Moriyacho, in December, it doesn't snow. In January, it regularly snows.

December has the shortest days of the year in Moriyacho, Japan, with an average of 9h and 48min of daylight.

The average day length in December is 9h and 49min.

On the first day of December, sunrise is at 06:32 and sunset at 16:28. On the last day of the month, sunrise is at 06:50 and sunset at 16:38 JST.

In December, the average sunshine duration is 6.2h.

January through March and December, with an average maximum UV index of 3, are months with the lowest UV index.

In December, the average daily maximum UV index in Moriyacho, Japan, is 3. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

16.7°C

11.7°C

9.3°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

16.3km/h

17.4km/h

17.5km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

15.2

19.7

20.8

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Moriyacho, Japan

Average high temperature in December: 11.7°C

The warmest month (with the highest average high temperature) is August (29.8°C).
The month with the lowest average high temperature is January (9.3°C).

Average low temperature in December: 6.9°C

The month with the highest average low temperature is August (25.3°C).
The coldest month (with the lowest average low temperature) is January (4°C).

Average pressure in December
Moriyacho, Japan

Average pressure in December: 1016.3mbar

The month with the highest atmospheric pressure is November (1018mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).

Average wind speed in December
Moriyacho, Japan

Average wind speed in December: 15.6km/h

The windiest month (with the highest average wind speed) is April (17.9km/h).
The calmest month (with the lowest average wind speed) is June (14.2km/h).

Average humidity in December
Moriyacho, Japan

Average humidity in December: 63%

The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is January (60%).

Average rainfall in December
Moriyacho, Japan

Average rainfall in December: 40mm

The wettest month (with the highest rainfall) is October (126mm).
The driest month (with the least rainfall) is December (40mm).

Average rainfall days in December
Moriyacho, Japan

Average rainfall days in December: 9 days

The month with the highest number of rainy days is June (16.1 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in December
Moriyacho, Japan

Average snowfall in December: 0mm

The month with the highest snowfall is February (22mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).

Average snowfall days in December
Moriyacho, Japan

Average snowfall days in December: 0.2 days

The month with the highest number of snowfall days is February (1.6 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in December /
Average sunshine in December
Moriyacho, Japan

Average daylight in December: 9h and 48min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

Average sunshine in December: 6h and 12min

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).

Average sunshine days in December
Moriyacho, Japan

Average sunshine days in December: 19.7 days

The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is October (11.7 days).

Average UV index in December
Moriyacho, Japan

Average UV index in December: 3

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March and December (UV index 3).

Average cloud cover in December
Moriyacho, Japan

Average cloud cover in December: 31

The month with the most cloud cover is October (Cloud cover 44).
The month with the least cloud cover is January (Cloud cover 30).

Average visibility in December
Moriyacho, Japan

Average visibility in December: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).